Aradioactive element has a half life of 50 days. what percentage of the original sample is left after 60 days

43.5 %

Step-by-step explanation:

50 days is 1 half life. And ten days is 0.2 half lives.

So the total half life is 1.2. To find the division factor you put the half life as a power of 2. So it is = 2.29739671

Then you divide 100% by that number which gives you 43.52752816

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

i do not know the answer

step-by-step explanation: